package cn.edu.ctbu.labtest.webapi;

import cn.edu.ctbu.labtest.core.PageUtils;
import cn.edu.ctbu.labtest.domain.Student;
import cn.edu.ctbu.labtest.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.web.bind.annotation.*;
import org.thymeleaf.util.StringUtils;

import java.util.List;

@RestController
@RequestMapping("webapi/student")
public class StudentRestController {

    @Autowired

    private StudentService studentService;
    /**
     * 读取的url：/webapi/student/list
     * @return
     */
    @GetMapping("list")

    public List<Student> getAll(){
        List<Student> students=studentService.findAll();
        return students;
    }

    /**
     * 分页读取分页
     * @return
     */
    @GetMapping("/getbypage")
    public PageUtils getByPage(@RequestParam(value = "page",defaultValue = "0")Integer page,
                                        @RequestParam(value = "size",defaultValue = "10")Integer size){
        //按id排倒序
        Sort sort=Sort.by(Sort.Direction.DESC,"id");
        Pageable pageable=PageRequest.of(page,size,sort);

        Page<Student> studentPage=studentService.findAll(pageable);
        PageUtils pageUtils=new PageUtils(studentPage.getContent(),studentPage.getTotalElements());

        return pageUtils;

    }

    /**
     * 读取的url：/webapi/student/get/id
     * @return
     */
    @GetMapping("/get/{id}")

    public Student get(@PathVariable Integer id){
        Student student=studentService.getById(id);
        student.setPassword("");
        return student;
    }

   /**
     * 新增学生方法/webapi/sudent/insert
     * @param student
     * @return*/
    @PostMapping("insert")
    public Student insert(Student student){
        Student student1=studentService.insert(student);

        return student1;

    }

    /**
     * 修改学生方法、webapi/student/update
     * @param student
     * @return
     */
    @PutMapping("update")
    public Student update(Student student){
        Student oldstudent=studentService.getById(student.getId());
        if(StringUtils.isEmpty(student.getPassword())){
            //没有新密码就用旧密码
            student.setPassword(oldstudent.getPassword());
        }
        student=studentService.update(student);

        return student;

    }

    /**
     * 删除学生方法、webapi/student/delete
     * @param
     * @return
     */
    @DeleteMapping("delete/{id}")
    public void delete(@PathVariable  Integer id){

        studentService.delete(id);
    }
}
